The students are surprised to know that elephants walk _____ tiptoe. [

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The students are surprised to know that elephants walk _____ tiptoe.      [     ]
A. after
B. on
C. in
D. at

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举一反三

He is fond _____ in his free time.[     ]
A. of singing
B. to singing
C. about singing
D. at singing

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My mother is _____ . [ ]
A. work
B. on work
C. at work
D. in work

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This kind of bamboo is suitable _____ pandas _____ eat.[     ]
A. for; for
B. to; to
C. for; to
D. to; for

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We"re going to play _____ No.4 Middle School. I"m sure we will win.       [     ]
A. to
B. with
C. against
D. and

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I often watch English movies ____spare time.       [     ]
A. on
B. of
C. in
D. to

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